Sony Blu-Ray 5.1 Home Theater System w/ Wireless Surround

I kinda have the same question, I ordered 2 star wars films and received the wrong one, I even went back and checked my receipt and compared pics to make sure I hadn’t accidentally ordered the wrong one, Whats my next step and the possible outcomes? Yes I went to the write us link, they say ask in forums first 8o) Thank for your help